Atf (Correctly Solved)
4 Forces Acting on an Aircraft correct answers Lift, weight, thrust, drag Bernoulli's Theorem correct answers P+1/2(roh)V^2= constant Or Pressure + 1/2 x air density x velocity squared = constant Or Static pressure + dynamic pressure = constant 2 Types of Pressure correct answers Static pressure - stationary Dynamic pressure - air in motion If one increases, the other decreases. Lift correct answers If an aircraft accelerates, it is no longer at a constant. When there is an increase in velocity over an aerofoil, there is a decrease in pressure over that aerofoil (static). Generated by air travelling faster above the aerofoil than below it. Downwash correct answers An increase in pressure underneath the aerofoil. Air deflected downwards. Newton's 3 Laws correct answers Inertia: objects in motion stay in motion, objects at rest stay at rest. F=ma: the degree to which an object changes its state of motion is proportional to the force applied. F=-F: every action has an equal and opposite reaction. Angle of Attack correct answers Angle made between the wing chord and the relative airflow. Centre of Pressure correct answers If we consider all distributed pressure to be equivalent to a single force, this force will act through a straight line. Where this line cuts the chord of an aerofoil is the centre of pressure.
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